On Dec 8, 2009, at 11:35 AM, ard at
p850ug1.demon.co.uk (Tony Duell) wrote:
Picked up an old terminal in very nice cosmetic condition; it works
fine
Make/model? Just in case one of us has heard of it and knows any stock
faults.
Ah, sorry. Don't know what I was thinking not including that :).
It's a CDC 721 (with PLATO mods). So obviously I'd like to get it
working smoothly...
Have you examined the solder side of the monitor PCB with the power
on? A
cracked solder joint can produce some intereting sparks.
I'll check that tonight.
Just checked; I can't get a good view of it because the solder side of
the PCB faces an aluminum mounting plate. Couldn't see any sparks
through the 1/4" gap between the two. I took the monitor PCB out (this
thing slides right apart, very easy to service) and made a careful
examination of the soldering. No obvious cracks, it looks very good.
The flyback looks good (externally, anyway) as well. No obviously bad
electrolytics. Checked the tube around the anode "suction cup" and it's
clean as a whistle.
Thanks,
Josh